JUMBO SEMOLINA PLANSIFTER

Aerodynamic-vacuum, twin-vibro-motor semolina classification station

A high-performance purification (purifier) unit for precisely classifying semolina particles by size and fully freeing them of light foreign matter — bran and husk — in modern flour and semolina mills. In semolina mills it secures maximum semolina yield from durum wheat, while in flour mills it is one of the diagram’s most critical control points for obtaining low-ash, high-quality, premium-segment flour from soft wheat.

WORKING PRINCIPLE

Homogeneous feeding onto the sieve cloth — aerodynamic distribution: the semolina mass arriving in the intake hopper is spread by the machine’s vibration as a flawless, even-thickness curtain over the sieve cloth tensioned on anodised-aluminium frames (sieve boxes).
Finely air-adjusted bran removal — counter-flow vacuuming: as the product flows over the cloth, the aerodynamic air channel and precise adjustment flaps above it engage; an even vacuum (negative pressure) is created over the whole screen surface, and the light-specific-gravity bran and husk particles are sucked upward and separated from the grain mass.
Twin-vibro-motor classification — multi-deck fluid grading: the linear vibrations of two high-efficiency vibro-motors rock the body, which is perfectly seated on rubber mounts; semolina sifted through the 2- or 3-deck screens (per the diagram) and classified by purity is flawlessly discharged to the relevant passages.

KEY ADVANTAGES

• Low-ash premium production: Isolating semolina particles from bran at the molecular level, it radically lowers the ash content of the finished flour in flour mills and maximises the flour’s colour, brightness and baking quality.

• “Easy-Tension” re-tensionable aluminium sieve boxes: The sophisticated aluminium box design allows the sieve cloths to be removed and replaced when the diagram changes; cloths loosened over time by heavy product flow are easily removed and re-tensioned, minimising cloth consumption and preserving maximum sieving efficiency.

• Quiet, dynamic damping systems: The body, seated on heavy-duty rubber mounts, does not transmit the vibro-motors’ dynamic forces to the plant floor or building frame; damping the vibration within itself, it delivers an extremely quiet, low-wear service life.

• Maximum aperture cleaning: Special cleaning brushes constantly moving beneath the screens keep the sieve-cloth apertures from clogging, providing stable cross-sectional suction 24 hours non-stop.

• Diagram options (Jumbo 2K / 3K): Jumbo 2K (2-deck screen) — standard semolina classification and cleaning for mid-scale flour lines and durum-wheat passages; Jumbo 3K (3-deck screen) — ultra-precise grading and intensive bran separation for high-capacity semolina mills and low-ash specialty flour processes.

ENGINEERING NOTE

The Vibro Semolina Purifier (Jumbo) is a flawless synchronisation of aerodynamics and controlled vibration. The negative pressure distributed evenly to each sieve box by the flap system forms a floating “fluidised bed” over the screen; through it the heavy clean semolina sinks and sifts through the cloth, while the bran stays on top. This fine aerodynamic balance directly determines flour quality and operating profitability in flour mills.